An electric bulb marked 40W-200V is used in a current if supply voltage 100V.Now its power is ?
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as we know power is equals to voltage x current and current is equals to power/ voltage=current so by calculate the current we get the current is equals to 1 / 5 ampere
so again the power is equals to voltage x current and voltage is give 100 volt so the power is equals to 100×1/5
so power is equal to 20 watt
hope it helps you....
so again the power is equals to voltage x current and voltage is give 100 volt so the power is equals to 100×1/5
so power is equal to 20 watt
hope it helps you....
Ronakjain11:
ok
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